3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 * Note, many functions in here may use MMX which trashes the FPU state, it is
27 * absolutely necessary to call emms_c() between DSP & float/double code.
30 #ifndef AVCODEC_DSPUTIL_H
31 #define AVCODEC_DSPUTIL_H
36 extern const uint8_t ff_alternate_horizontal_scan[64];
37 extern const uint8_t ff_alternate_vertical_scan[64];
38 extern const uint8_t ff_zigzag248_direct[64];
40 extern uint32_t ff_square_tab[512];
42 void ff_put_pixels8x8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
43 void ff_avg_pixels8x8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
44 void ff_put_pixels16x16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
45 void ff_avg_pixels16x16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
48 void ff_put_rv40_qpel16_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
49 void ff_avg_rv40_qpel16_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
50 void ff_put_rv40_qpel8_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
51 void ff_avg_rv40_qpel8_mc33_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride);
53 void ff_gmc_c(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int oy,
54 int dxx, int dxy, int dyx, int dyy, int shift, int r,
55 int width, int height);
57 /* minimum alignment rules ;)
58 * If you notice errors in the align stuff, need more alignment for some ASM code
59 * for some CPU or need to use a function with less aligned data then send a mail
60 * to the ffmpeg-devel mailing list, ...
62 * !warning These alignments might not match reality, (missing attribute((align))
63 * stuff somewhere possible).
64 * I (Michael) did not check them, these are just the alignments which I think
65 * could be reached easily ...
67 * !future video codecs might need functions with less strict alignment
70 /* add and put pixel (decoding)
71 * Block sizes for op_pixels_func are 8x4,8x8 16x8 16x16.
72 * h for op_pixels_func is limited to { width / 2, width },
73 * but never larger than 16 and never smaller than 4. */
74 typedef void (*tpel_mc_func)(uint8_t *block /* align width (8 or 16) */,
75 const uint8_t *pixels /* align 1 */,
76 int line_size, int w, int h);
77 typedef void (*qpel_mc_func)(uint8_t *dst /* align width (8 or 16) */,
78 uint8_t *src /* align 1 */, ptrdiff_t stride);
80 typedef void (*op_fill_func)(uint8_t *block /* align width (8 or 16) */,
81 uint8_t value, int line_size, int h);
83 #define DEF_OLD_QPEL(name) \
84 void ff_put_ ## name(uint8_t *dst /* align width (8 or 16) */, \
85 uint8_t *src /* align 1 */, ptrdiff_t stride); \
86 void ff_put_no_rnd_ ## name(uint8_t *dst /* align width (8 or 16) */, \
87 uint8_t *src /* align 1 */, ptrdiff_t stride); \
88 void ff_avg_ ## name(uint8_t *dst /* align width (8 or 16) */, \
89 uint8_t *src /* align 1 */, ptrdiff_t stride);
91 DEF_OLD_QPEL(qpel16_mc11_old_c)
92 DEF_OLD_QPEL(qpel16_mc31_old_c)
93 DEF_OLD_QPEL(qpel16_mc12_old_c)
94 DEF_OLD_QPEL(qpel16_mc32_old_c)
95 DEF_OLD_QPEL(qpel16_mc13_old_c)
96 DEF_OLD_QPEL(qpel16_mc33_old_c)
97 DEF_OLD_QPEL(qpel8_mc11_old_c)
98 DEF_OLD_QPEL(qpel8_mc31_old_c)
99 DEF_OLD_QPEL(qpel8_mc12_old_c)
100 DEF_OLD_QPEL(qpel8_mc32_old_c)
101 DEF_OLD_QPEL(qpel8_mc13_old_c)
102 DEF_OLD_QPEL(qpel8_mc33_old_c)
104 struct MpegEncContext;
105 /* Motion estimation:
106 * h is limited to { width / 2, width, 2 * width },
107 * but never larger than 16 and never smaller than 2.
108 * Although currently h < 4 is not used as functions with
109 * width < 8 are neither used nor implemented. */
110 typedef int (*me_cmp_func)(struct MpegEncContext *c,
111 uint8_t *blk1 /* align width (8 or 16) */,
112 uint8_t *blk2 /* align 1 */, int line_size, int h);
117 typedef struct ScanTable {
118 const uint8_t *scantable;
119 uint8_t permutated[64];
120 uint8_t raster_end[64];
123 void ff_init_scantable(uint8_t *permutation, ScanTable *st,
124 const uint8_t *src_scantable);
125 void ff_init_scantable_permutation(uint8_t *idct_permutation,
126 int idct_permutation_type);
131 typedef struct DSPContext {
132 /* pixel ops : interface with DCT */
133 void (*get_pixels)(int16_t *block /* align 16 */,
134 const uint8_t *pixels /* align 8 */,
136 void (*diff_pixels)(int16_t *block /* align 16 */,
137 const uint8_t *s1 /* align 8 */,
138 const uint8_t *s2 /* align 8 */,
140 void (*put_pixels_clamped)(const int16_t *block /* align 16 */,
141 uint8_t *pixels /* align 8 */,
143 void (*put_signed_pixels_clamped)(const int16_t *block /* align 16 */,
144 uint8_t *pixels /* align 8 */,
146 void (*add_pixels_clamped)(const int16_t *block /* align 16 */,
147 uint8_t *pixels /* align 8 */,
149 void (*add_pixels8)(uint8_t *pixels, int16_t *block, int line_size);
150 int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
152 * translational global motion compensation.
154 void (*gmc1)(uint8_t *dst /* align 8 */, uint8_t *src /* align 1 */,
155 int srcStride, int h, int x16, int y16, int rounder);
157 * global motion compensation.
159 void (*gmc)(uint8_t *dst /* align 8 */, uint8_t *src /* align 1 */,
160 int stride, int h, int ox, int oy,
161 int dxx, int dxy, int dyx, int dyy,
162 int shift, int r, int width, int height);
163 void (*clear_block)(int16_t *block /* align 16 */);
164 void (*clear_blocks)(int16_t *blocks /* align 16 */);
165 int (*pix_sum)(uint8_t *pix, int line_size);
166 int (*pix_norm1)(uint8_t *pix, int line_size);
168 me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
170 me_cmp_func hadamard8_diff[6];
171 me_cmp_func dct_sad[6];
172 me_cmp_func quant_psnr[6];
180 me_cmp_func dct_max[6];
181 me_cmp_func dct264_sad[6];
183 me_cmp_func me_pre_cmp[6];
184 me_cmp_func me_cmp[6];
185 me_cmp_func me_sub_cmp[6];
186 me_cmp_func mb_cmp[6];
187 me_cmp_func ildct_cmp[6]; // only width 16 used
188 me_cmp_func frame_skip_cmp[6]; // only width 8 used
190 int (*ssd_int8_vs_int16)(const int8_t *pix1, const int16_t *pix2,
194 * Thirdpel motion compensation with rounding (a + b + 1) >> 1.
195 * this is an array[12] of motion compensation functions for the
196 * 9 thirdpel positions<br>
197 * *pixels_tab[xthirdpel + 4 * ythirdpel]
198 * @param block destination where the result is stored
199 * @param pixels source
200 * @param line_size number of bytes in a horizontal line of block
203 tpel_mc_func put_tpel_pixels_tab[11]; // FIXME individual func ptr per width?
204 tpel_mc_func avg_tpel_pixels_tab[11]; // FIXME individual func ptr per width?
206 qpel_mc_func put_qpel_pixels_tab[2][16];
207 qpel_mc_func avg_qpel_pixels_tab[2][16];
208 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
209 qpel_mc_func put_mspel_pixels_tab[8];
211 me_cmp_func pix_abs[2][4];
213 /* HuffYUV specific */
214 void (*add_bytes)(uint8_t *dst /* align 16 */,
215 uint8_t *src /* align 16 */,
217 void (*diff_bytes)(uint8_t *dst /* align 16 */,
218 const uint8_t *src1 /* align 16 */,
219 const uint8_t *src2 /* align 1 */,
222 * Subtract HuffYUV's variant of median prediction.
223 * Note, this might read from src1[-1], src2[-1].
225 void (*sub_hfyu_median_prediction)(uint8_t *dst, const uint8_t *src1,
226 const uint8_t *src2, int w,
227 int *left, int *left_top);
228 void (*add_hfyu_median_prediction)(uint8_t *dst, const uint8_t *top,
229 const uint8_t *diff, int w,
230 int *left, int *left_top);
231 int (*add_hfyu_left_prediction)(uint8_t *dst, const uint8_t *src,
233 void (*add_hfyu_left_prediction_bgr32)(uint8_t *dst, const uint8_t *src,
234 int w, int *red, int *green,
235 int *blue, int *alpha);
236 /* this might write to dst[w] */
237 void (*bswap_buf)(uint32_t *dst, const uint32_t *src, int w);
238 void (*bswap16_buf)(uint16_t *dst, const uint16_t *src, int len);
240 /* assume len is a multiple of 8, and arrays are 16-byte aligned */
241 void (*vector_clipf)(float *dst /* align 16 */,
242 const float *src /* align 16 */,
243 float min, float max, int len /* align 16 */);
246 void (*fdct)(int16_t *block /* align 16 */);
247 void (*fdct248)(int16_t *block /* align 16 */);
250 void (*idct)(int16_t *block /* align 16 */);
253 * block -> idct -> clip to unsigned 8 bit -> dest.
254 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
255 * @param line_size size in bytes of a horizontal line of dest
257 void (*idct_put)(uint8_t *dest /* align 8 */,
258 int line_size, int16_t *block /* align 16 */);
261 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
262 * @param line_size size in bytes of a horizontal line of dest
264 void (*idct_add)(uint8_t *dest /* align 8 */,
265 int line_size, int16_t *block /* align 16 */);
268 * IDCT input permutation.
269 * Several optimized IDCTs need a permutated input (relative to the
270 * normal order of the reference IDCT).
271 * This permutation must be performed before the idct_put/add.
272 * Note, normally this can be merged with the zigzag/alternate scan<br>
273 * An example to avoid confusion:
274 * - (->decode coeffs -> zigzag reorder -> dequant -> reference IDCT -> ...)
275 * - (x -> reference DCT -> reference IDCT -> x)
276 * - (x -> reference DCT -> simple_mmx_perm = idct_permutation
277 * -> simple_idct_mmx -> x)
278 * - (-> decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant
279 * -> simple_idct_mmx -> ...)
281 uint8_t idct_permutation[64];
282 int idct_permutation_type;
283 #define FF_NO_IDCT_PERM 1
284 #define FF_LIBMPEG2_IDCT_PERM 2
285 #define FF_SIMPLE_IDCT_PERM 3
286 #define FF_TRANSPOSE_IDCT_PERM 4
287 #define FF_PARTTRANS_IDCT_PERM 5
288 #define FF_SSE2_IDCT_PERM 6
290 int (*try_8x8basis)(int16_t rem[64], int16_t weight[64],
291 int16_t basis[64], int scale);
292 void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
293 #define BASIS_SHIFT 16
294 #define RECON_SHIFT 6
296 void (*draw_edges)(uint8_t *buf, int wrap, int width, int height,
297 int w, int h, int sides);
298 #define EDGE_WIDTH 16
300 #define EDGE_BOTTOM 2
302 void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src,
303 int src_wrap, int width, int height);
306 * Calculate scalar product of two vectors.
307 * @param len length of vectors, should be multiple of 16
309 int32_t (*scalarproduct_int16)(const int16_t *v1,
310 const int16_t *v2 /* align 16 */, int len);
313 * Calculate scalar product of v1 and v2,
314 * and v1[i] += v3[i] * mul
315 * @param len length of vectors, should be multiple of 16
317 int32_t (*scalarproduct_and_madd_int16)(int16_t *v1 /* align 16 */,
323 * Clip each element in an array of int32_t to a given minimum and
325 * @param dst destination array
326 * constraints: 16-byte aligned
327 * @param src source array
328 * constraints: 16-byte aligned
329 * @param min minimum value
330 * constraints: must be in the range [-(1 << 24), 1 << 24]
331 * @param max maximum value
332 * constraints: must be in the range [-(1 << 24), 1 << 24]
333 * @param len number of elements in the array
334 * constraints: multiple of 32 greater than zero
336 void (*vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min,
337 int32_t max, unsigned int len);
339 op_fill_func fill_block_tab[2];
342 void ff_dsputil_static_init(void);
343 void ff_dsputil_init(DSPContext *p, AVCodecContext *avctx);
344 void avpriv_dsputil_init(DSPContext* p, AVCodecContext *avctx);
345 attribute_deprecated void dsputil_init(DSPContext* c, AVCodecContext *avctx);
347 int ff_check_alignment(void);
349 void ff_set_cmp(DSPContext *c, me_cmp_func *cmp, int type);
351 void ff_dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
352 void ff_dsputil_init_arm(DSPContext *c, AVCodecContext *avctx,
353 unsigned high_bit_depth);
354 void ff_dsputil_init_bfin(DSPContext *c, AVCodecContext *avctx,
355 unsigned high_bit_depth);
356 void ff_dsputil_init_ppc(DSPContext *c, AVCodecContext *avctx,
357 unsigned high_bit_depth);
358 void ff_dsputil_init_x86(DSPContext *c, AVCodecContext *avctx,
359 unsigned high_bit_depth);
361 void ff_dsputil_init_dwt(DSPContext *c);
363 #endif /* AVCODEC_DSPUTIL_H */